That depends on how the mini-roundabouts are modelled in the route network, so it's chicken and egg. I mentioned what I would expect, and you are right, that's not always how it happens now. But if I ask a fellow human for directions, they will call it a roundabout, as in "turn left at the roundabout" and not "turn left (at the junction)".
Junctions (including roundabouts) could be tagged with information for large/oversize vehicles, like inner radius and outer radius for example, which might allow a bit of swept path analysis. But that would need to be based on physical characteristics, and not subjective tags like whether you think it qualifies as a mini-roundabout or not. So I agree that it would be nice to converge the treatment of mini-/roundabouts and add the tags to describe the centre part. //colin On 2015-11-04 11:03, Florian Lohoff wrote: > On Tue, Nov 03, 2015 at 05:35:53PM +0100, Colin Smale wrote: > >> Hi Gerd, >> >> Personally from a navigation point of view I expect roundabouts and >> mini-roundabouts to be treated the same, i.e. "take the first exit at > > They are currently not - Most navigational software basically does > not know about mini-roundabouts because they are difficult to > preprocess (One needs to add ways). > > I'd like mini_roundabouts to disappear and be replaced with > an additional tag on a roundabout which tells about the existance > of an obstacle in the middle which makes it one less special case. > > junction=roundabout > center_obstacle=clear/yes/no/drivable > roundabout=flat/obstacle > > Whatever ... So processing a roundabout is ALWAYS the same from the > navigational perspective and changes only from route selection when > your vehicle is getting longer. > > Flo > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging
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